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Difficulty: HardClinical Preventive Services and Screening

A 63-year-old woman comes to the clinic for a routine health maintenance examination. She feels well and has no specific complaints. She underwent natural menopause at age 51 and has had no subsequent vaginal bleeding. Her past medical history is significant for severe, seropositive rheumatoid arthritis, which has been well-controlled for the past five years on a regimen of weekly methotrexate and daily low-dose prednisone (5 mg5 \text{ mg} daily). She has never smoked and consumes alcohol rarely. Her blood pressure is 118/76 mmHg118/76 \text{ mmHg}, heart rate is 72/min72/\text{min}, and BMI is 22 kg/m222 \text{ kg/m}^2. Her most recent screening mammogram was performed 6 months ago and was normal. She had a screening colonoscopy at age 58, which revealed no polyps or abnormalities. She received the 20-valent pneumococcal conjugate vaccine (PCV20) and the recombinant zoster vaccine series at age 62. Her most recent Pap smear and HPV cotesting at age 61 were negative, following a history of consistently negative cervical screenings. Which of the following is the most appropriate next step in preventive care for this patient?

  1. Dual-energy x-ray absorptiometry scanAnswer
  2. B
    Administration of the live-attenuated measles, mumps, and rubella vaccine
  3. C
    Endometrial biopsy
  4. D
    Screening for ovarian cancer with serum CA-125 and transvaginal ultrasonography
  5. E
    Screening for asymptomatic bacteriuria with a urine culture

Answer

Dual-energy x-ray absorptiometry scan
The most appropriate next step in preventive care for this patient is a dual-energy x-ray absorptiometry (DEXA) scan. The United States Preventive Services Task Force (USPSTF) recommends osteoporosis screening for women aged 65 and older, as well as for postmenopausal women younger than 65 who are at an increased risk of osteoporosis. This patient has multiple significant clinical risk factors that lower her bone mineral density, including a history of rheumatoid arthritis and chronic, long-term use of systemic glucocorticoids (prednisone). These factors independently accelerate bone loss and significantly increase her fracture risk, making early screening with a DEXA scan the standard of care.

Step-by-Step Solution

1
Evaluate the patient's current age, medical conditions, and medications against preventive care guidelines.
The patient is a 63-year-old postmenopausal woman with rheumatoid arthritis on chronic glucocorticoids and methotrexate.
Age, medical history, and current immunosuppressive medications directly dictate screening eligibility and vaccine safety.
2
Assess the need for osteoporosis screening based on age and clinical risk factors.
Although she is under 65, her chronic prednisone use and rheumatoid arthritis place her at high risk for accelerated bone loss and fractures, meeting the criteria for early screening.
The USPSTF recommends bone measurement testing for postmenopausal women younger than 65 who have an increased risk of osteoporosis based on a clinical risk assessment tool.
3
Evaluate the remaining options to rule out non-indicated or contraindicated interventions.
She is up to date on cancer screenings (breast, colon, cervical). Endometrial biopsy, ovarian cancer screening, and asymptomatic bacteriuria screening are not recommended. Live vaccines (like MMR) are contraindicated.
Eliminating distractors confirms that the bone density scan is the only indicated and safe preventive intervention for this patient.

Key Concept

The USPSTF recommends screening for osteoporosis with bone measurement testing (DEXA) in postmenopausal women younger than 65 years who are at increased risk of osteoporosis, such as those with rheumatoid arthritis or chronic glucocorticoid use.
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Topics

Clinical Preventive Services and Screening

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